Optimizing string capitalization challenge

[Drone4four]

Here is the Udemy instructor's challenge:

Write a function that capitalizes the first and fourth letters of a name
old_macdonald('macdonald') --> MacDonald

Here is my solution:

def old_macdonald(name):
    first_cap = name[0].capitalize() + name[1:3]
    second_cap = name[3].capitalize() + name[4:]   
    together = first_cap + second_cap
    return together

This produces the desired output: MacDonald but I was wondering how you people would perhaps optimize this or re-write it in a more Pythonic way?

For my future reference, the course material I am working is publicly available here: Pierian-Data/Complete-Python-3-Bootcamp. The specific sub- module I am working on is: 03-Methods and Functions/03-Function Practice Exercises.ipynb